Final Fantasy X International (Import) Cheats

Unlock Nemesis
Nemesis is the possibly the hardest monster in the entire game. To acquire the challenge to take on this foe you must:
Capture 10 (ten) of every monster in all areas.
Defeat every normal monster in every area in the arena.
Defeat all of the created monsters in Species/Area Conquest and Original.
After accomplishing these tasks the arena owner creates Nemesis.